Hello, Welcome to HCM, As your son fell over the lips and having lacerated wound it should be treated vigorously,because the upper lip area is considered as dangerous area of lip and the infection can drain into cavernous sinus and may leads to cavernous sinus thrombosis. Meanwhile if he develops any symptoms like vomiting, nausea and altered sensorium, you need to report to your doctor immediately. I would suggest you to give 1.Syrup Bactoclav 3.5 ml twice daily for 5 days. 2.Syrup Dolo 5ml, thrice daily 3.Oint T Bact for local application. You can follow these remedies, but these drugs are available only on prescription. Thank you.